package vip.zhenzicheng.concurrent_program.thread.sgg.completablefuture;

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;

/**
 * @author zhenzicheng
 * @date 2022-06-21 19:12
 */
public class CompletableFutureAPI2Demo {

  public static void main(String[] args) {
    ExecutorService threadPool = Executors.newFixedThreadPool(3);

    CompletableFuture.supplyAsync(() -> {
      try {
        TimeUnit.SECONDS.sleep(1);
      } catch (InterruptedException e) {
        e.printStackTrace();
      }
      System.out.println("111");
      return 1;
    }, threadPool).handle((f, e) -> {
      int i = 10 / 0;
      System.out.println("222");
      return f + 2;
    }).handle((f, e) -> {
      System.out.println("333");
      return f + 3;
    }).whenComplete((v, e) -> {
      if (e == null) {
        System.out.println("计算结果: " + v);
      }
    }).exceptionally(e -> {
      e.printStackTrace();
      System.out.println(e.getMessage());
      return null;
    });
    System.out.println(Thread.currentThread().getName() + "----主线程正在执行其他任务");

    threadPool.shutdown();
  }
}
